The really interesting part is which particular politicians won and which lost. Chafee, DeWine, and Santorum, the senators who lost their seats, were RINOs. The Republicans who lost in the House tended to be the same. The Democrats who picked up seats in the House tended to run as conservatives.
So, the old adage is proven correct once again: you win elections by moving to the right. The Democrats moved right, and they won. The Republicans moved left, and they lost.
Let us hope that the message is heard, by both Republicans AND Democrats. Maybe the Republicans can learn from their error this time around, and runs some even more conservative candidates against the conservative Dems who beat them this time.